US4637739A - Linear guide device - Google Patents
Linear guide device Download PDFInfo
- Publication number
- US4637739A US4637739A US06/792,588 US79258885A US4637739A US 4637739 A US4637739 A US 4637739A US 79258885 A US79258885 A US 79258885A US 4637739 A US4637739 A US 4637739A
- Authority
- US
- United States
- Prior art keywords
- closure members
- ball
- guide device
- linear guide
- end caps
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/06—Ball or roller bearings in which the rolling bodies circulate partly without carrying load
- F16C29/0633—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides
- F16C29/0652—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are at least partly defined by separate parts, e.g. covers attached to the legs of the main body of the U-shaped carriage
- F16C29/0654—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are at least partly defined by separate parts, e.g. covers attached to the legs of the main body of the U-shaped carriage with balls
- F16C29/0657—Ball or roller bearings in which the rolling bodies circulate partly without carrying load with a bearing body defining a U-shaped carriage, i.e. surrounding a guide rail or track on three sides whereby the return paths are at least partly defined by separate parts, e.g. covers attached to the legs of the main body of the U-shaped carriage with balls with two rows of balls, one on each side of the rail
Definitions
- This invention relates to a linear guide device, and in particular to a linear guide device in which the working of ball return holes and the assembly of the entire device have become easy.
- a linear guide device includes an axially extending rail and a saddle-shaped (C-shaped) bearing movably mounted thereon through a number of balls.
- the balls roll in a ball rolling grooves formed between the rail and the bearing oppositely and come to an end portion of the bearing. Therefore, usually, a pair of end caps for circulating (U-turning) the balls are attached to the opposite ends of the bearing and an axial hole for returning the balls U-turned by the end caps of the opposite end portion of the bearing is formed in each side of the bearing.
- Said ball return hole has heretofore been formed by forming an elongated circular hole in the bearing body by the use of a drill.
- the drill is readily damaged and the working of the hole requires a long time and moreover, the holes is bent or otherwise deformed. All these lead to low working accuracy.
- the balls must be inserted into this ball return hole through the openings at the opposite ends thereof, and this has means cumbersomeness of the incorporation of the balls.
- concave grooves are formed in the opposite outer sides of the bearing body lengthwisely thereof and the concave grooves are closed by a pair of closure members each having a length and width sufficient to close the concave grooves.
- the end portions of the closure members are supported by end caps when the end caps are attached to the bearing body.
- the closing members are supported by the end caps when the end caps are attached to the bearing body and therefore, the mounting of the closing members becomes easy and reliable.
- FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
- FIG. 2 is a front view showing the same embodiment with end caps omitted.
- a rail 10 has a rectangular cross-section and extends long, and the opposite side surfaces thereof are each formed with a ball rolling grooves 12 extending lengthwisely of the rail.
- a bearing 15 comprises a body 20 and a pair of end caps 30 and is formed with a recess 22 in the central portion of the underside thereof and thus, it has a saddle-like shape.
- ball rolling grooves 26 In the inner side surfaces of a pair of opposite sleeve portions 24 of the bearing, ball rolling grooves 26 (only one of which is shown) extending lengthwisely of the bearing are formed opposed relationship with said ball rolling grooves 12.
- the outer side surfaces of the body 20 are stepped in the intermediate portions thereof in the direction of height, and upper halves 23 project more sideways than lower halves 25.
- open concave grooves 28 of semicircular cross-section are formed lengthwisely of and over the full length of the lower halves.
- Threaded holes 23 for bolts for mounting the bearing 15 on a moving table, not shown, are formed in the upper surface of the body 20, and threaded holes 25 for bolts for mounting the end caps 30 are formed in the end surfaces of the body 20.
- the end caps 30 are formed of synthetic resin and have a shape similar to the shape of the main body 20 (saddle-like shape) of the bearing.
- a pair of semi-circular grooves 34 of a predetermined width are laterally formed in a pair of sides 32 of each end cap, and semi-circular return guides 36 (only one of which is shown) are mounted in a direction perpendicular to the grooves 34 whereby ball circulation holes are defined.
- a pair of rectangular recesses 40 are formed outwardly of the grooves 34, and a pair of screw-receiving holes 33 are formed upwardly of the grooves 34.
- the caps 30 may be mounted to the body 20 by inserting screws 35 into the holes 33 and threadably engaging the screws 35 with the threaded holes 25.
- a pair of closure members 50 are formed of a metal or synthetic resin and are of the same height as the lower halves 25 and of the same length as the body 20 so as to fully close said concave grooves 28.
- Rectangular projections 52 capable of being fitted into the recesses 40 of the end caps 30 are formed on the central portions of the opposite end surfaces of the closure members 50.
- a number of balls 60 are inserted in the ball rolling grooves 12 and 26, the ball circulation holes of the end caps 30 and the ball return holes 54 of the main body 20.
- the closure members 50 are mounted to the body 20 simultaneously with the mounting of the end caps 30 to the body 20. That is, the cumbersome operation of mounting the closure members to the main body by means of screw members as in the prior art becomes unnecessary.
- the linear guide device of the present invention is of the type in which the projections 52 are fitted into the recesses 40, the relative position between the closing members 50, the end caps 30 and the body 20 is primarily determined, and ball return holes 54 of a desired shape and desired dimensions can be formed easily.
- the closure members 50 are made of synthetic resin, the body 20 will become light in weight and inexpensive.
- the balls 60 are inserted into the concave grooves 28 from the outer sides thereof, whereafter the closure members 50 are attached to the outer sides of the concave grooves 28 by means of the end caps 30.
- apparatuses for manufacturing semiconductures or the like are used in a clean atmosphere and are required not to contaminate the atmosphere, and where the linear guide device of the present invention is utilized in these apparatuses, if the closure members 50 are formed of a plastic material, the balls 60 can be prevented from producing abrasion powder when they moves in the ball return holes 54 and thus, the clean atmosphere will not be contaminated. Further, if the closure members 50 are formed of an oil-containing plastic material impregnated with lubricating oil, it will be unnecessary to use grease which is used in the case of a metal and therefore, there will be no undesirable possibility that the atmosphere is contaminated by the vaporization of the grease. Suitable oil-containing plastic materials include oil-containing polyacetal, oil-containing polyamide, oil-containing polyester, etc.
- the present invention should not be limited to the above-described embodiment, but suitable changes and improvements may of course be made within the scope of the invention.
- the specific shape of the rail 10 and/or the bearing 15, the detailed structure of the concave grooves 28 and/or the closure members 50 and the manner of engagement between the closure members 50 and the end caps 30 may be arbitrarily chosen as required, and the end caps may be formed with projections and the closure members may be formed with recesses, or the end portions of the closure members may be directly fitted to or engaged with the end caps.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984169819U JPS6185716U (el) | 1984-11-10 | 1984-11-10 | |
JP59-169819[U] | 1984-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4637739A true US4637739A (en) | 1987-01-20 |
Family
ID=15893483
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/792,588 Expired - Lifetime US4637739A (en) | 1984-11-10 | 1985-10-29 | Linear guide device |
Country Status (3)
Country | Link |
---|---|
US (1) | US4637739A (el) |
JP (1) | JPS6185716U (el) |
FR (1) | FR2573142B1 (el) |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4944607A (en) * | 1988-07-16 | 1990-07-31 | Werner Jacob | Revolving guiding means for rolling members |
US5082374A (en) * | 1989-11-09 | 1992-01-21 | Koyo Seiko Co., Ltd. | Linear guide device |
US5085522A (en) * | 1990-08-07 | 1992-02-04 | Nsk Ltd. | Return guide fixing structure for a linear guide apparatus |
US5102235A (en) * | 1991-01-10 | 1992-04-07 | Thomson Industries, Inc. | Linear motion bearing |
US5265963A (en) * | 1991-05-13 | 1993-11-30 | Thk Co., Ltd. | Side cover fixing structure for linear motion bearing |
US5431498A (en) * | 1994-04-11 | 1995-07-11 | Thomson Industries, Inc. | Linear motion bearing |
US5800065A (en) * | 1997-05-16 | 1998-09-01 | Thomson Industries, Inc. | Linear motion bearing sub-assembly with inserted races |
US6170986B1 (en) * | 1999-04-07 | 2001-01-09 | Chieftech Precision Co., Ltd. | Linear motion rolling guide device |
US6200031B1 (en) | 1995-10-17 | 2001-03-13 | Deutsche Star Gmbh | Linear guide arrangement |
EP1236913A1 (en) * | 2001-02-23 | 2002-09-04 | Nippon Thompson Co., Ltd. | Linear motion guide unit |
US6712511B2 (en) | 2001-02-21 | 2004-03-30 | Nippon Thompson Co., Ltd. | Linear motion guide unit |
US20060098903A1 (en) * | 2004-11-08 | 2006-05-11 | Hiwin Technologies Corp. | Rolling member guiding structure |
CN1314905C (zh) * | 2003-04-11 | 2007-05-09 | 日本精工株式会社 | 线性导轨装置 |
DE19920477B4 (de) * | 1999-05-04 | 2007-06-21 | Chieftech Precision Co., Ltd. | Wälzführungseinrichtung für Linearbewegungen |
US7241048B2 (en) | 2002-08-14 | 2007-07-10 | Rexroth Star Gmbh | Linear guide device, chain body, and method of producing a chain body |
DE102004043027B4 (de) * | 2003-09-04 | 2014-04-17 | Nsk Ltd. | Linearführungsvorrichtung |
US20170259925A1 (en) * | 2016-03-14 | 2017-09-14 | Airbus Defence and Space GmbH | Seat fastening device |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61206818A (ja) * | 1985-03-08 | 1986-09-13 | Hiroshi Teramachi | 直線運動用ベアリングユニツト |
JP2004132494A (ja) | 2002-10-11 | 2004-04-30 | Nsk Ltd | リニアガイド装置 |
CN100538094C (zh) * | 2004-12-15 | 2009-09-09 | Thk株式会社 | 滚动引导装置 |
WO2013002064A1 (ja) * | 2011-06-30 | 2013-01-03 | Smc株式会社 | リニアアクチュエータ |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027626A (en) * | 1958-07-09 | 1962-04-03 | Barden Corp | Method of making a sintered polyamide resin ball bearing retainer |
US4432587A (en) * | 1978-06-22 | 1984-02-21 | Blasius Industries, Inc. | Recirculating ball bearing assembly |
US4552416A (en) * | 1983-04-12 | 1985-11-12 | Neff Gewindespindeln Gmbh | Rearing arrangement for guiding a carriage in a straight line along a guide rail |
US4555149A (en) * | 1982-09-20 | 1985-11-26 | Hiroshi Teramachi | Linear slide bearing and linear slide table using this bearing |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BG17876A1 (el) * | 1972-08-29 | 1974-03-05 | ||
JPS55109819A (en) * | 1979-02-14 | 1980-08-23 | Hiroshi Teramachi | Linearly guiding slide bearing unit |
JPS58157023U (ja) * | 1982-04-16 | 1983-10-20 | 日本精工株式会社 | 軌道案内軸受 |
JPS5958225A (ja) * | 1982-05-20 | 1984-04-03 | Hiroshi Teramachi | 直線摺動ベアリング |
JPS59164415A (ja) * | 1983-03-08 | 1984-09-17 | Hiroshi Teramachi | 直線摺動用ロ−ラ−ベアリング及び直線摺動用ロ−ラ−テ−ブル |
-
1984
- 1984-11-10 JP JP1984169819U patent/JPS6185716U/ja active Pending
-
1985
- 1985-10-29 US US06/792,588 patent/US4637739A/en not_active Expired - Lifetime
- 1985-11-07 FR FR8516508A patent/FR2573142B1/fr not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3027626A (en) * | 1958-07-09 | 1962-04-03 | Barden Corp | Method of making a sintered polyamide resin ball bearing retainer |
US4432587A (en) * | 1978-06-22 | 1984-02-21 | Blasius Industries, Inc. | Recirculating ball bearing assembly |
US4555149A (en) * | 1982-09-20 | 1985-11-26 | Hiroshi Teramachi | Linear slide bearing and linear slide table using this bearing |
US4552416A (en) * | 1983-04-12 | 1985-11-12 | Neff Gewindespindeln Gmbh | Rearing arrangement for guiding a carriage in a straight line along a guide rail |
Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4944607A (en) * | 1988-07-16 | 1990-07-31 | Werner Jacob | Revolving guiding means for rolling members |
US5082374A (en) * | 1989-11-09 | 1992-01-21 | Koyo Seiko Co., Ltd. | Linear guide device |
US5085522A (en) * | 1990-08-07 | 1992-02-04 | Nsk Ltd. | Return guide fixing structure for a linear guide apparatus |
US5102235A (en) * | 1991-01-10 | 1992-04-07 | Thomson Industries, Inc. | Linear motion bearing |
EP0494682A2 (en) * | 1991-01-10 | 1992-07-15 | Thomson Industries, Inc. | Linear motion bearing |
EP0494682A3 (en) * | 1991-01-10 | 1993-10-27 | Thomson Ind Inc | Linear motion bearing |
US5265963A (en) * | 1991-05-13 | 1993-11-30 | Thk Co., Ltd. | Side cover fixing structure for linear motion bearing |
US5431498A (en) * | 1994-04-11 | 1995-07-11 | Thomson Industries, Inc. | Linear motion bearing |
US6200031B1 (en) | 1995-10-17 | 2001-03-13 | Deutsche Star Gmbh | Linear guide arrangement |
US5800065A (en) * | 1997-05-16 | 1998-09-01 | Thomson Industries, Inc. | Linear motion bearing sub-assembly with inserted races |
US6170986B1 (en) * | 1999-04-07 | 2001-01-09 | Chieftech Precision Co., Ltd. | Linear motion rolling guide device |
DE19920477B4 (de) * | 1999-05-04 | 2007-06-21 | Chieftech Precision Co., Ltd. | Wälzführungseinrichtung für Linearbewegungen |
US6712511B2 (en) | 2001-02-21 | 2004-03-30 | Nippon Thompson Co., Ltd. | Linear motion guide unit |
EP1236913A1 (en) * | 2001-02-23 | 2002-09-04 | Nippon Thompson Co., Ltd. | Linear motion guide unit |
US7241048B2 (en) | 2002-08-14 | 2007-07-10 | Rexroth Star Gmbh | Linear guide device, chain body, and method of producing a chain body |
CN1314905C (zh) * | 2003-04-11 | 2007-05-09 | 日本精工株式会社 | 线性导轨装置 |
DE102004043027B4 (de) * | 2003-09-04 | 2014-04-17 | Nsk Ltd. | Linearführungsvorrichtung |
US20060098903A1 (en) * | 2004-11-08 | 2006-05-11 | Hiwin Technologies Corp. | Rolling member guiding structure |
US7594756B2 (en) * | 2004-11-08 | 2009-09-29 | Hiwin Technologies Corp. | Rolling member guiding structure |
US20170259925A1 (en) * | 2016-03-14 | 2017-09-14 | Airbus Defence and Space GmbH | Seat fastening device |
US10703486B2 (en) * | 2016-03-14 | 2020-07-07 | Airbus Defence and Space GmbH | Seat fastening device |
Also Published As
Publication number | Publication date |
---|---|
JPS6185716U (el) | 1986-06-05 |
FR2573142A1 (fr) | 1986-05-16 |
FR2573142B1 (fr) | 1990-06-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: NIPPON SEIKO KABUSIKI KAISHA, 2-3-2. MARUNOUCHI, C Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HATTORI, MASARU;REEL/FRAME:004476/0330 Effective date: 19851024 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
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FEPP | Fee payment procedure |
Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
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FPAY | Fee payment |
Year of fee payment: 12 |